package com.blb.util;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * @PackageName:com.example.ao.util
 * @ClassName:AliyunOSSUtil
 * @Description: oss对象存储
 * @author:smallWhite
 * @date:2021/11/12 14:45
 */
@Service
@Slf4j
public class AliyunOSSUtil {

    private static SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
    @Value("${oss.endpoint}")
    String endpoint;
    @Value("${oss.keyid}")
    String accessKeyId;
    @Value("${oss.keysecret}")
    String accessKeySecret;
    @Value("${oss.bucketname}")
    String bucketName;
    @Value("${oss.filehost}")
    String fileHost;


    /**
     * 上传
     * @param file
     * @return
     */
    public  String upload(MultipartFile file,String fileName){
        log.info("=========>OSS文件上传开始："+file.getName());

        System.out.println(endpoint+"endpoint");
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String dateStr = format.format(new Date());

        if(null == file){
            return null;
        }

        OSSClient ossClient = new OSSClient(endpoint,accessKeyId,accessKeySecret);
        try {
            //容器不存在，就创建
            if(! ossClient.doesBucketExist(bucketName)){
                ossClient.createBucket(bucketName);
                CreateBucketRequest createBucketRequest = new CreateBucketRequest(bucketName);
                createBucketRequest.setCannedACL(CannedAccessControlList.PublicRead);
                ossClient.createBucket(createBucketRequest);
            }
            //创建文件路径
            String fileUrl = fileHost+"/"+(dateStr + "/" + fileName);
            //上传文件
//            PutObjectResult result = ossClient.putObject(new PutObjectRequest(bucketName, fileUrl, file));
            PutObjectResult result = ossClient.putObject(bucketName, fileUrl,new ByteArrayInputStream(file.getBytes()));

            //设置权限 这里是公开读
            ossClient.setBucketAcl(bucketName,CannedAccessControlList.PublicRead);
            if(null != result){
                log.info("==========>OSS文件上传成功,OSS地址："+fileUrl);
                return fileUrl;
            }
        }catch (OSSException oe){
            log.error(oe.getMessage());
        }catch (ClientException ce){
            log.error(ce.getMessage());
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            //关闭
            ossClient.shutdown();
        }
        return null;
    }


    /**
     * 删除
     * @param fileKey
     * @return
     */
    public  String deleteBlog(String fileKey){
        log.info("=========>OSS文件删除开始");

        try {
            OSSClient ossClient = new OSSClient(endpoint,accessKeyId,accessKeySecret);

            if(!ossClient.doesBucketExist(bucketName)){
                log.info("==============>您的Bucket不存在");
                return "您的Bucket不存在";
            }else {
                log.info("==============>开始删除Object");
                ossClient.deleteObject(bucketName,fileKey);
                log.info("==============>Object删除成功："+fileKey);
                return "==============>Object删除成功："+fileKey;
            }
        }catch (Exception ex){
            log.info("删除Object失败",ex);
            return "删除Object失败";
        }
    }

    /**
     * 查询文件名列表
     * @param bucketName
     * @return
     */
    public List<String> getObjectList(String bucketName){
        List<String> listRe = new ArrayList<>();

        try {
            log.info("===========>查询文件名列表");
            OSSClient ossClient = new OSSClient(endpoint,accessKeyId,accessKeySecret);
            ListObjectsRequest listObjectsRequest = new ListObjectsRequest(bucketName);
            //列出11111目录下今天所有文件
            listObjectsRequest.setPrefix("11111/"+format.format(new Date())+"/");
            ObjectListing list = ossClient.listObjects(listObjectsRequest);
            for(OSSObjectSummary objectSummary : list.getObjectSummaries()){
                System.out.println(objectSummary.getKey());
                listRe.add(objectSummary.getKey());
            }
            return listRe;
        }catch (Exception ex){
            log.info("==========>查询列表失败",ex);
            return new ArrayList<>();
        }
    }

}